CVE-2026-87997

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/chat/completions and POST /api/v1/chat/completions in backend/open_webui/main.py copied a client-supplied folder_id into a new chat without applying the folder write-access check used by the dedicated chat routes. An authenticated user who knew a shared folder identifier could inject an attacker-controlled chat into a folder where the user had read-only or no write access, causing the entry to appear to authorized folder readers. This issue is fixed in version 0.11.1.

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Produits concernés

• open-webui
• Openwebui open webui

Scores CVSS

Faiblesses (CWE)

• CWE-639
• CWE-862

Références

• https://github.com/open-webui/open-webui/commit/d9e23b90c100d19b00270aea3cde0501d2354a6c Patch
• https://github.com/open-webui/open-webui/pull/28366 Issue TrackingPatch
• https://github.com/open-webui/open-webui/releases/tag/v0.11.1 Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-3pf7-q2g3-wj28 ExploitVendor Advisory
• https://github.com/open-webui/open-webui/security/advisories/GHSA-3pf7-q2g3-wj28 ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories